package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;
@Slf4j
@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public void shopingcat(ShoppingCartDTO shoppingCartDTO) {
        //新建一个购物车
        ShoppingCart shoppingCart = new ShoppingCart();
        //复制信息到购物车
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
        //设置只能查询自己的数据
        shoppingCart.setUserId(BaseContext.getCurrentId());
        log.info("用户id {}", BaseContext.getCurrentId());
        //判断当前商品是否在购物车中
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list !=null&&list.size()==1){
        //如果已经存在，就更新数量，数量加1
            shoppingCart = list.get(0);
            shoppingCart.setNumber(shoppingCart.getNumber()+1);
            //执行修改数量
            shoppingCartMapper.updatebyid(shoppingCart);

        }else{
          //如果不存在，就将数据插入
            //获取菜品id
            //判断当前添加到购物车的是菜品还是套餐
            Long dishId = shoppingCartDTO.getDishId();
            if (dishId != null){
                //添加到购物车的是菜品,获取这个菜品
                Dish dish = dishMapper.getById(dishId);
                //添加到购物车
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());

            }else {
                //添加到购物车的是套餐
                Setmeal setmeal = setmealMapper.getbyid(shoppingCartDTO.getSetmealId());
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());

            }
            //因为不存在，所以设置数量是1
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);



        }

        }


    /**
     * 查看购物车
     * @return
     */
    @Override
    public List<ShoppingCart> selectcar() {

        return shoppingCartMapper.list(ShoppingCart.builder()
                        .userId(BaseContext.getCurrentId())
                        .build());
    }

    /**
     * 清空购物车
     */
    @Override
    public void cleanshopcar() {
        shoppingCartMapper.deletebyid(BaseContext.getCurrentId());
    }
}
